Counter-thrust pressure motor



April 1, 1930.

C. G. EDWARDS COUNTER THRUST PRESSURE MOTOR Filed April 11. 1928 2 Sheets-Sheet l g; 29' 7 2 4 -40 I we 36 ZLfIa H i m l I I 50 v I I InA/ntor Filed April 11, 1928 2 Sheets-Sheet 2 Patented Apr. 1, 1930 cnannncn e; EDWARDS, or Los ANGELES, CALIFORNIA coun'rnn-rnnus'r rnnssunn Moron tioned to provide a more efficient coolingsystemto-oarry away'the heat developed by the hot gases passing along-the side of the cylinder and piston. i I x In a counter thrust motor such as I have developed the pressure of the exploded gases on thetop of the piston passes intoa channel in the side of the cylinder and counteracts the side or angular thrust of the piston ag'ain'st-the cylinder due to the angularity of 20 the connecting rod from the wrist pin to the crank shaft during the power stroke of the engine. -This action ofithe 'hotrexploded gases communicates considerable heat to the walls of the cylinder and to the piston. The

= 2 elfe'ctuahco'oling of this channel and the various parts associated I therewith isone of the objects of the present invention;

Another object of my invention-is in a counter thrust motor to utilize-a spring pres sure device to react to the'pressure developed by'the'gase's giving a relatively Targe passage in th'e channelofthe cylinder under high pressure 'and "decreasing this passage .under comparatively low pressure; ',Therefore,-'by thiscon'struction, during the 'time of excessivelyjhigh pressure due'to the explosion in the cylinder', the gate-like block restricting the passage in the channelis forced outwardly allowing some" gas to bear against the side of the piston andhence more effectivelyfcounteracting the side pressure." My 'i venti'ontwill be more readily understood from the following description and drawings,in which} j I c Fig. 1'is 'a' vertical section through an engine of a watercooled type, illustrating certain'features of myin-vention, a

4 Fig.2 is a horizontal" section 'onthe line 2-2 oi Fig. 1 in the direction ofthe arrows,

- Fig; 3 isa-par'tial horizontal section taken Application filed April 11,

invention is a counter thrust pressure cylinder has fiattenedsurfaces 20 with bolt holes 21 on each side of the Water jacket 192s. Seria1 No.269 ,087.

on the line 3-3 of Fig. 1 in-the direction of the arrows, 5 Fig. 4 is a perspective .view of the engine cylinder showing the channel in the cylinder for the closure block on the piston, and illus-, trating the water passages,-

Fig. 5 is a perspective new of the side cover of a cylinder to enclose the channel and water passages,-

Fig. 6 is a perspective view 'of'the channellike closure block for attachment to the piston,

Fig. 7 is a perspective view of the fixed block fitting in the channel or recess of the cover, r

Fig. 8 is a perspective view of the elongated movable gate engaging with the fixed block,

Flg. 9 is across section of an air-cooled type of engine showing the manner of securing the removable cover inposition;

In the constructionshown the engine cylinder is designated generally by the numeral 11 whichhas a cylinderheald 12 connected thereto and a crank case 13 atthe bottom.

The cylinder has a longitudinal slot '14 formed in one ofthe side walls.- This slot has removable wear. faces 15 thereon secured in position in any suitable manner.

The faces .15 at'each preferably on the same level. A- cross plate 17 on the cylinder forms a closure for the The cylinder is providedwi-th a hollow space 18 for the lateral elongated openings 19 on each side The outer portion'of the section. These-surfaces20 are preferably on a plane with'the surfaces 16. The side cover 22 has vertical flanges 23' adapted to fit on the surfaces 24 and with a cross recess at the bottom 24 adapted to fit over the palte 17. There is a central web 25 which fits against the surfaces 16, this having a deep channel or recess 26 formed therein at the upper part of the cover to hold the gate as hereunder described. This construction leaves spaces 27 which register 'withthe 1 side of the slot are jacket, this'hollow space having 58 openings 19 in the water jacket and there is a passage 28 completely around the central structure 29 which has the web and the channel 26 formed therein. The cover is secured in place by bolts 30. A neck 31 connects the central structure 29 with the outer 1 thereon. A spring 41 surrounds the stem and bears against the plate 42 held in. position on. the cover by bolts 43-and a washer 44 bearing against the nuts 40.

In Fig. 7 I show a fined block 45 which has a web section 46 to fit in the base of the channel or recess 26. This block has a plurality of cross slots 47 which engage tongues 48 on the gate 33. There is also a wide cross slot 49'uin the block 45 to engage the central lug 35 on thegate.

The piston 50 has a channel-shaped hanger 51 attached thereto (note particularly Figs. 1-; 2; 3 and 6)-. This hanger has a web portion 52 conforming to the cylindrical shape of the piston with flanges 53 extending outwardly, thereby leaving an elongated channel 54. There is a cross channel 55 at the bottom with packing material 56 fitted therein, thispacking material being adapted'to bear against the surfaces 25 of the cover and the sides 15 of theslot 14 and prevent downward passage of gas. The upper end 57 of the hanger is adapted. to extend above the-piston.

The block 45 is fitted in the channel or re cess 26 of the cover 22 in such manner as to be immovable therein, and this blockhas a perforation 58 to allow passage of the stem 36 connected to the gate 33. The sides 53 of the hanger 51 are adapted to bear on the surfaces 15 of the slot .14 of the cylinder and the gate 33 fits in the channel 54 of this hanger. The normal position of the gate is with this pressed substantially to the base of the channel 54. However, when the gas in the cylinder head explodes itblows downwardly between the web portion: 52 of the hanger and the gate 33, thus giving a larger passage for the transmission of gas to the portion of the cylinder below the channel 26. The

downward blast of the gas to:the crank chamher is prevented by the packing 56 in'the lower part of the hanger. The. piston. therefore is thrust laterally by thisside pressure of gas, and such action compensates for the 1 side thrust on the piston due to the angularity of thecrank shaft on the power stroke The water circulation isthrough the spaces 18 in the main body of the cylinder and such circulation p'assesthrough the opening 19 in V ;Var1ons changes may bemade .a removable cover the cylinder and circulates through the passages 27 and 28 of the cover, thus effectively cooling the cover, such passages in the cover extending substantially to the base thereof so that in the downward movement of the piston the gas at the side thereof is subjected to a cooling action.

In Fig, 9 lillustrate a construction suitable for an air-cooled motor in which the cylinder is indicated by the numeral 60, having a slot therein 61 inwhich fits the hanger 62 on the piston 63. The cover 64 has flanges 65 fitting against the edge 66 of the portion of the cylinder adjacent the slot 61. The cover is provided with an elongated channel orrrecess 657 similar to the channel or recess 26- in-Fi-g. 5. The cover-is held in position on the main body of the cylinder by a series of metal straps 63 which are in any suitable manner drawn taut thus holding the cover in position; The mainbo'dy of the cylinder is provided with coolingfins- 68 and: the cover also with cooling fins69. Therefore, in this air-cooled construction I may readily keep the cylinder and the cover properly cooled.

in the princ ples of my invention witho 1 departing from the spirit thereof, as set forth. in the description drawings and claims.

Iclaixnz; e r 1. A. motor having a cylinder with a slot III-0116 side, a cover forming; a closure for said a cover forsaidslothaving agchannel'therein, a piston slldable in the cylinder .andh-aving an obstruction operating the slot, a lateral movable gate in'the channel of the cover, and means-operatively connected to the cover to cool theportion of the cylinder adjacent thereto and the cover. I

3. A motor comprising in combination .a cylinder having an elongated slot on. one side, secured to the side of the cylinderbo ver the said slot, a combustion chamber attheuhead of'thecylinder, vand a .plston having a hanger attached thereto on oneside with an obstruction on said hanger operating in the said slot;

4. A motoras claimed in claimfi, the cover having a longitudinal channeland a gate transversely mounted therein, the said; gate fitting in the said-hanger.andcontrollingthe flow of gas fromthe-combustion chamber downwardly in the slot in the cylinder.

5. .A motoras claimed in claim. 3, the-cover having a longitudinal channel, a blockfixecl therein, an elongated gate shiftable transverselyof the block, thesaidblock and gate having inter-engaging means, thehanger on the pistonbeing channel shaped and the gate I downwardlyin the said slot.

' claimed in claim 6. In an internal combustion engine, having a cylinder and a piston therein and a combustion chamber above said piston,an elongated slot extending through the walls of the cylinder and communicating With the combustion chamber, a removable cover on the side of the cylinder forming a closure for said slot, and a projection on said piston adjacent its lower endreceivable in said slot.

7. In an lnternal combustion engine as claimed in claim 6, the said cover having means to cool the portion of the cylinder adjacent thereto and to cool the cover.

8. In an internal combustion engine, having a piston and a cylinder, a longitudinal slot in the wall of the cylinder, a removable cover secured to the side of the cylinder forming a closure for said upon the piston receivable in said slot whereby a side thrust may be applied to said piston.

9. An internal combustion engine comprising in combination a cylinder having a longitudinal slot in one side, a cover forming a closure for said slot, the cover having a chan nel in alignment with the slot, a combustion chamber at the having a channel shaped hanger on one side operating in the said slot with a-packing at the bottom having a bearing against a bearing surface on the cover, a gate mounted in the said channel of the cover having a transverse movementto regulate the cross sectional area of the channel of the hanger, and means to control the movement of said gate;

10. An internal combustion engine comprising in combination'a cylinder having a longitudinal slot through one side, a cover secured to such side and forming a closure for the slot, the cover having a channel section in alignment with the slot and a flat bearing surface below said channel, a combustion chamber at the head of the cylinder, a piston having a channel shaped hanger operating in the slot with a packing at the lower end to bear on the bearing surface of the cover, a block fitted in the channel, a transversely movable gate inter-engaging with the block and shiftable into the channel of the hanger, and means to control the movement of said ate.

g 11. An internal combustion engine as 10, the means to control the movement of the gate comprising a stem secured thereto and extending outwardly through an opening in the block and in the cover, a spring onthe stem, a plate secured to the cover against which the spring bears, and an abutment means on the stem engaging the opposite end of the spring.

12. An internal combustion engine having a cylinder with a longitudinal slot through one side, a cover forming a closure on such side, and a piston having an obstruction operable in said slot, the cylinder having a water jacket, the cover having a water jacket, there being communicating openings between the jacket of the cylinder and the cover.

13. An internal combustion engine comprising in combination a cylinder having a longitudinal slot in one side, a cover forming a closure for such side, the cover having a a channel therein, a piston having an obstruction operating in the said slot, and a gate transversely slidable in the channel of the cover adapted to restrict the cross sectional area of the said slot, the cylinder and the cover having water jackets with a communicating opening from the water jacket of the cylinder to that of the cover.

In testimony whereof I have signed my name to this specification.

G G. EDWARDS.

slot, and a projection head of the cylinder, a piston 

